Results 61 to 70 of about 1,054 (293)

Infinitesimal Method Based Calculation of Metro Stray Current in Multiple Power Supply Sections

IEEE Access, 2020
The calculation of rail potential and stray current in the DC traction power system can guide the protection against the rail overvoltage problem and mitigate the electrolytic corrosion due to stray current.
Sheng Lin, Qi Zhou, Xiaohong Lin, Mingjie Liu, Aimin Wang   +4 more
doaj   +1 more source

Enhanced Strength and Corrosion Resistance of Ti‐13Nb‐12Ta‐10Zr‐4Sn Alloy by Aging Treatment

Advanced Engineering Materials, EarlyView.
This work systematically investigates the effect of aging treatment on mechanical properties and corrosion behavior of vacuum arc‐melted Ti‐13Nb‐12Ta‐10Zr‐4Sn alloy. Owing to the increased α″ martensite, strength and corrosion resistance were significantly enhanced by aging treatment.
Yuhua Li, Rong Zhao, Qian Zhang, Haojie Wang, Yujing Liu, Lai‐Chang Zhang   +5 more
wiley   +1 more source

S-Transform Based Time–Frequency Evaluation of Dynamic Stray Current in Zero-Resistance Converter System

Energies
In DC urban rail transit, stray current causes unneglectable electrochemical corrosion to metallic structures near running rails. In view of the low-frequency and non-stationary distribution of dynamic stray current due to multiple trains in lines, its ...
Xiangxuan Sun, Xiaofeng Yang, Runda Zhao, Zhenshuai Wang, Maolu Chen, Trillion Q. Zheng   +5 more
doaj   +1 more source

Stray Current Corrosion of Aluminum Electrolysis System

IOP Conference Series: Materials Science and Engineering, 2018
The aluminum smelting process requires large amounts of electricity, and the leakage of current from aluminum cells is through the earth forming stray current. Stray current induce corrosion on metallic pipeline and steel in concrete, leading to severe localized attack. Stray current corrosion in the metallic pipeline is totally similar to the classic;
A-lin Cao, Lin Guo, Jing-jing Li
openaire   +1 more source

Direct Metal Deposition of Graphene–Ti28Nb35.4Zr Matrix Composites With Enhanced Mechanical, Corrosion, and Biocompatibility Properties for Bone Implants

Advanced Engineering Materials, EarlyView.
Graphene nanoplatelet (0.1 wt.%) reinforcement significantly enhances the performance of β Ti‐28Nb‐35.4Zr alloy. Grain refinement, reduced water contact angle, and improved surface characteristics promote osteoblast adhesion and complete surface coverage after 7 days.
Khurram Munir, Jixing Lin, Yuncang Li, Li Zhu, Paul F. A. Wright, Cuie Wen   +5 more
wiley   +1 more source

Electrolytic corrosion of water pipeline system in the remote distance from stray currents—Case study

Case Studies in Construction Materials, 2016
Case study of corrosion failure of urban water supply system caused by the harmful effects of stray currents was presented. The failure occurred at a site distant from the sources of these currents namely the tramway and railway traction systems ...
Krzysztof Zakowski​, Kazimierz Darowicki​, Juliusz Orlikowski​, Agata Jazdzewska​, Stefan Krakowiak​, Maciej Gruszka, Jacek Banas​   +6 more
doaj   +1 more source

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

Advanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar, Akash Vyas, Mohammad Aatif Qazi, Nashit Jalal, Maria Ophelia Jarligo, Mostafa Yakout, Jing Liu, André McDonald   +7 more
wiley   +1 more source

Multi-physics coupled simulation and experimental investigation of alternating stray current corrosion of buried gas pipeline adjacent to rail transit system

Materials & Design
As the gradual emergence of alternating current (AC) electrified rail transit system in urban areas, buried gas pipeline adjacent to the system will be seriously corroded by induced alternating stray current.
Chengtao Wang, Shaoyi Xu, Wei Li, Yuqiao Wang, Guanyi Shen, Shuchen Wang   +5 more
doaj   +1 more source

Stray current corrosion mitigation, testing and maintenance in DC transit system [PDF]

, 2017
Stray current corrosion in direct current (dc) transit systems occurs because of the mechanism of current transfer between metals and a conductive electrolyte such as concrete, soil and water.
Fromme, P, Memon, SA
core  

Machine Learning‐Supported Analysis for Predicting and Visualizing Nonlinear Relationships Between Material Properties in Electroplated Chromium Layers

Advanced Engineering Materials, EarlyView.
This study applies machine learning regression to predict chromium layer thickness in decorative trivalent chromium electroplating, using 441 experiments from laboratory‐scale (1L) and pilot‐scale (14L) setups. Tree‐based models, particularly CatBoost, outperformed linear regression by capturing nonlinear parameter interactions (R2$R^2$ up to 0.77 ...
Christoph Baumer, Christopher Mai, Luca Eisentraut, Andreas Bund, Ricardo Buettner   +4 more
wiley   +1 more source